Performance improvement of TiO2∕P3HT solar cells using CuPc as a sensitizer
Performance improvement of TiO2∕P3HT solar cells using CuPc as a sensitizer
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DOI：
10.1063/1.2884270
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发表时间：
2008-02
影响因子：
4
通讯作者：
Liang Shen;Guohui Zhu;Wenbin Guo;Chen Tao;Xindong Zhang;Caixia Liu;Weiyou Chen;S. Ruan;Z. Zhong-Z
中科院分区：
文献类型：
--
作者：
Liang Shen;Guohui Zhu;Wenbin Guo;Chen Tao;Xindong Zhang;Caixia Liu;Weiyou Chen;S. Ruan;Z. Zhong-Z
在这项工作中，一种新型的TiO 2/聚合物太阳能电池的制备。器件结构为二氧化钛（TiO 2）/酞菁铜（CuPc）/聚3-己基噻吩（P3 HT）/Au。在这种结构中，TiO 2被设计为电子受体，P3 HT是电子供体。CuPc被用作敏化剂以增强光子吸收。结果表明，通过在P3 HT和TiO 2层之间插入CuPc，光吸收、激子分离和光照下的光电流显著改善。器件的短路电流密度（JSC）为1.15mascincm ~ 2，功率转换效率（η）为0.28%.而在大气质量1.5G（AM 1.5G）、强度为100 mW的闪烁cm ~ 2的光照下，厚度为20 nm的CuPc层的JSC和η分别为2.22mA的闪烁cm ~ 2和0.66%。性能的改善可以归因于更高的载流子迁移率和更强的光子吸收使用CuPc作为敏化层。
In this work, a new type of TiO2/polymer solar cells was fabricated. The device structure was indium tin oxide titanium dioxide (TiO2)/ copper phthalocyanine (CuPc)/poly(3-hexylthiophene) (P3HT)/Au. In this architecture, TiO2 was designed to act as electron acceptor, and P3HT was electron donor. CuPc was used as a sensitizer to enhance photon absorption. The results show that by inserting CuPc between P3HT and TiO2 layers, the light absorption, excitons separation, and photocurrent under illumination are dramatically improved. The device has a short current density (JSC) of 1.15mA∕cm2 and power conversion efficiency (η) of 0.28% without CuPc layer. However, JSC and η turn to be 2.22mA∕cm2 and 0.66%, respectively, with a 20nm thickness CuPc layer under air mass 1.5 global (AM1.5G) illumination with the intensity of 100mW∕cm2. The performance improvement can be attributed to the higher carrier mobility and the stronger photon absorption using CuPc as a sensitizing layer.